<template>
  <div class="login">
    <h1>登录</h1>
    <div class="login-wrapper">
      <div class="avatar">
        <img src="../assets/image/my-avatar.jpg" alt="头像">
      </div>
      <van-form @submit="onSubmit">
        <van-cell-group inset>
          <van-field
            v-model="state.username"
            name="用户名"
            label="用户名"
            placeholder="用户名"
            :rules="[{ required: true, message: '请填写用户名' }]"
          />
          <van-field
            v-model="state.password"
            type="password"
            name="密码"
            label="密码"
            placeholder="密码"
            :rules="[{ required: true, message: '请填写密码' }]"
          />
        </van-cell-group>
        <div style="margin: 16px;">
          <van-button round block type="primary" native-type="submit">
            登录
          </van-button>
        </div>
      </van-form>
    </div>
    <p class="register" @click="toRegister">新用户？点击这里注册</p>
  </div>
</template>

<script setup>
import { reactive } from 'vue';
import { useRouter } from 'vue-router' 
import axios from '../utils/axios.js'
const router = useRouter()
const state = reactive({
  username: '',
  password: '',  
})
const onSubmit = async () => {
  // 发接口请求，把用户输入的账号、密码传给后端
  const res = await axios.post('/login_q', {
    username: state.username,
    password: state.password
  })
  if (res.code == '200') {
   
    sessionStorage.setItem('userInfo', JSON.stringify(res.data).id)
   
    router.push('/home')
  }
}

const toRegister = () => {
  router.push('/register')
}
</script>

<style lang="less" scoped>
.login{
  width: 100vw;
  height: 100vh;
  background-color: #fff;
  padding: 0 0.3rem;
  box-sizing: border-box;
  // 将父容器变为BFC容器，避免h1标签设置的margin出现margin重叠问题
  overflow: hidden;
  position: relative;
  h1{
    height: 0.6933rem;
    text-align: center;
    margin-top: 1.12rem;
    font-size: 0.48rem;
  }
  .login-wrapper{
    width: 7.44rem;
    height: 10.77rem;
    border: 1px solid rgba(187, 187, 187, 1);
    margin: 0 auto; // 块级元素水平居中
    margin-top: 1.7rem;
    border-radius: 0.3rem;
    box-shadow: 0 0 0.533rem 0 rgba(170, 170, 170, 1);
    .avatar{
      width: 2.4rem;
      height: 2.4rem;
      overflow: hidden;
      border-radius: 50%;
      margin: 1rem auto 0.77rem;
      img{
        width: 100%;
      }
    }
  }
  .register{
    position: absolute;
    bottom: 30px;
    width: 80%;
    left: 50%;
    text-align: center;
    font-size: 0.374rem;
    transform: translateX(-50%);
    height: 0.6rem;
    line-height: 0.6rem;
    color: rgba(16, 16, 16, 1);
  }
}
</style>
<!-- 微调vant表单组件的样式 不加scoped是为了让此样式穿透全局 覆盖原有样式才行 -->
<style>
/* 让input框左侧文字与input框间距看起来合适*/
.van-cell__title.van-field__label {
  width: 45px;
}
</style>